# cupy.roll¶

cupy.roll(a, shift, axis=None)[source]

Roll array elements along a given axis.

Elements that roll beyond the last position are re-introduced at the first.

Parameters: a (ndarray) – Array to be rolled. shift (int or tuple of int) – The number of places by which elements are shifted. If a tuple, then axis must be a tuple of the same size, and each of the given axes is shifted by the corresponding number. If an int while axis is a tuple of ints, then the same value is used for all given axes. axis (int or tuple of int or None) – The axis along which elements are shifted. By default, the array is flattened before shifting, after which the original shape is restored. Output array. ndarray